Acoustics. Reference zero for the calibration of audiometric equipment. Reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 kHz to 16 kHz.
NORMA vydána dne 15.2.2001
Designation standards: BS EN ISO 389-5:2001
Note: NEPLATNÁ
Publication date standards: 15.2.2001
The number of pages: 14
Approximate weight : 42 g (0.09 lbs)
Country: British technical standard
Kategorie: Technické normy BS